CN111531834A

CN111531834A - Extrusion cutting device for producing modified plastics

Info

Publication number: CN111531834A
Application number: CN202010356979.1A
Authority: CN
Inventors: 罗永玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-08-14

Abstract

The invention discloses an extrusion cutting device for producing modified plastics, which comprises an extrusion mechanism, a coaxial positioning block and a cutting mechanism, wherein the extrusion mechanism comprises an extrusion motor, a bearing seat, a feeding hole, a main shaft, an extrusion screw, a discharging hole and an extrusion inner cylinder body, the heating mechanism comprises a guide plate, a liquid inlet, a liquid outlet, a heating cylinder body and a heating coil, the cutting mechanism comprises a cutting blade and a driving motor, when the material flow advances along with the rotation of the extrusion screw through the variable pitch of the extrusion screw and the variable diameter of the extrusion inner cylinder body, the material is firstly extruded due to the reduction of the space caused by the variable pitch of the extrusion screw, and is further extruded along with the reduction of the diameter of the extrusion inner cylinder body when reaching the right side of the extrusion inner cylinder body, the cutting blade intermittently cuts the material flow extruded out the discharging hole, thereby completing the extrusion and cutting of the modified plastic.

Description

Extrusion cutting device for producing modified plastics

Technical Field

The invention relates to the technical field of modified plastic processing equipment, in particular to an extrusion cutting device for producing modified plastics.

Background

The modified plastic is a plastic product which is processed by filling, blending, reinforcing and other methods on the basis of general plastics and engineering plastics and has improved flame retardance, strength, impact resistance, toughness and other aspects.

The development of the modified plastic industry in China is rapid, and the annual increase of the yield and the apparent consumption respectively reaches 20 percent and 15 percent. The annual total demand of domestic modified plastics is about 500 million tons, which accounts for about 10% of the consumption of all plastics, but is still far lower than the world average level by 20%. In addition, the plastic consumption per capita in China has a great gap compared with the developed countries in the world. As an index for measuring the development level of the national plastic industry, namely the plastic-steel ratio, the plastic-steel ratio in China is only 30: 70, less than the world average of 50: 50, more distant and less developed countries such as the united states 70: 30 and 63 in Germany: 37. with the great improvement of the living standard of people and the progress of technical means, the tendency that steel is replaced by plastic and wood is replaced by plastic in China becomes. The modified plastic is used as an important component in the field of new chemical materials, and is also one of the scientific and technological fields which are mainly developed by the state. The common plastic often has the characteristics and defects of the common plastic, and the modified plastic can form great improvement in the aspects of strength, hardness, toughness, flame retardance and cold resistance. The existing improvement technologies include a reinforcing technology, a toughening technology, a filling modification technology, a blending and plastic alloy technology, a flame retardant technology, a nano composite technology, a thermoplastic elastomer technology and a reaction grafting modification technology. However, no matter which modification technology is adopted, the processes of blanking, stirring, extruding, cooling, air drying, cutting and the like are the most basic.

The existing extrusion is usually carried out by utilizing double screws for mutual extrusion, however, the structure of the extrusion device is complex, and the installation precision requirement between the screws is high, so that the time and the labor are wasted in manufacturing and installation, and the manufacturing cost of the device is higher.

Disclosure of Invention

The invention aims to provide an extrusion cutting device for producing modified plastics, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

an extrusion cutting device for producing modified plastics, which comprises an extrusion mechanism, a coaxial positioning block and a cutting mechanism, the extruding mechanism comprises an extruding motor, a bearing seat, an upper flange, a lower flange, a feeding hole, a main shaft, an extruding screw, a discharging hole and an extruding inner cylinder body, the lower flange is arranged on the left side of the extruding inner cylinder body, the lower flange is fixedly connected with the extrusion inner cylinder body, the left side of the lower flange is detachably connected with an upper flange, the left side of the upper flange is fixedly connected with a bearing seat, the left side of the bearing seat is detachably connected with the extrusion motor, the interior of the extrusion inner cylinder body is rotatably connected with a main shaft, an extrusion screw is arranged on the main shaft and is fixedly connected with the main shaft, the right side fixedly connected with discharge gate of barrel in extruding, left side fixedly connected with feed inlet, the feed inlet opening is upwards.

Heating mechanism includes guide plate, inlet, liquid outlet, heating barrel and heating coil, the heating barrel arrange in the outside of barrel just in extruding the heating barrel is with extruding fixed connection between the barrel the right side top fixedly connected with inlet of heating barrel, heating barrel left side below fixedly connected with liquid outlet, and the inside of heating barrel is equipped with the guide plate, fixed connection between the outer wall of barrel in the guide plate is with extruding, the inside fixedly connected with heating coil of heating barrel, shutdown mechanism is including cutting off blade and driving motor, it with to cut off the blade fixed connection between the last output shaft of driving motor, the quantity that cuts off the blade just winds between 3-5 driving motor's output shaft circumference is evenly arranged.

As a further scheme of the invention: the upper flange and the lower flange are detachably connected through a connecting assembly.

As a further scheme of the invention: the extrusion screw is a variable pitch screw, and the pitch of the extrusion screw is gradually reduced from left to right.

As a further scheme of the invention: the inner extruding cylinder body is a variable-diameter cylinder body, and the space between the inner parts of the right side of the inner extruding cylinder body is gradually reduced.

As a further scheme of the invention: the right end of the main shaft is rotatably connected with the coaxial positioning block, and the coaxial positioning block is connected and fixed with the extrusion inner barrel through a fixing rod.

As a further scheme of the invention: the number of the fixing rods is not less than 4.

As a further scheme of the invention: the bearing seat, the main shaft, the discharge hole, the extrusion inner cylinder body, the coaxial positioning block and the heating cylinder body are coaxially arranged.

As a further scheme of the invention: the upper flange sealing surface is provided with a groove, a sealing gasket is arranged in the groove, and the lower flange sealing surface is provided with a lug matched with the groove.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, when the material advances along with the rotation of the extrusion screw through the variable pitch of the extrusion screw and the variable diameter of the extrusion inner cylinder, the material is firstly extruded due to the space reduction caused by the variable pitch of the extrusion screw, is further extruded along with the reduction of the diameter of the extrusion inner cylinder body when reaching the right side of the extrusion inner cylinder body, and is finally extruded from the discharge port, the cutting blade is driven by the driving motor to intermittently cut off the material flow extruded out of the discharge hole, thereby completing the extrusion and cutting of the modified plastic, simultaneously preventing the material from being cooled and solidified in the moving process by the heating mechanism positioned outside the extrusion inner cylinder body, and the heating coil arranged in the heating cylinder body can provide guarantee for the heat preservation capability of the heating mechanism in cold seasons or areas.

Drawings

FIG. 1 is a cross-sectional view of an extrusion cutting apparatus for producing a modified plastic.

FIG. 2 is a schematic structural view of a coaxial positioning block in an extrusion cutting device for producing modified plastics.

FIG. 3 is a schematic view showing the installation of an upper flange and a lower flange in an extrusion cutting apparatus for producing modified plastics.

In the figure: 10. an extrusion mechanism; 30. a heating mechanism; 40. a cutting mechanism; 11. an extrusion motor; 12. a bearing seat; 13. connecting the assembly; 14. an upper flange; 15. a lower flange; 16. a feed inlet; 17. a main shaft; 18. extruding a screw; 19. fixing the rod; 20. a coaxial positioning block; 21. a discharge port; 22. extruding the inner cylinder; 31. a baffle; 32. a liquid inlet; 33. a liquid outlet; 34. heating the cylinder; 35. a heating coil; 41. cutting off the blade; 42. a drive motor; 50. a gasket seal.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. Other embodiments, which can be obtained by those skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the term "center". The orientations or positional relationships indicated by "length," "width," "height," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "side," and the like are based on the orientations or positional relationships shown in fig. 1 and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Example 1

Referring to fig. 1-3, an extrusion cutting device for producing modified plastics comprises an extrusion mechanism 10, a coaxial positioning block 20 and a cutting mechanism 40, wherein the extrusion mechanism 10 comprises an extrusion motor 11, a bearing seat 12, an upper flange 14, a lower flange 15, a feed inlet 16, a main shaft 17, an extrusion screw 18, a discharge outlet 21 and an extrusion inner cylinder 22, the lower flange 15 is arranged on the left side of the extrusion inner cylinder 22, the lower flange 15 is fixedly connected with the extrusion inner cylinder 22, the upper flange 14 is detachably connected on the left side of the lower flange 15, the bearing seat 12 is fixedly connected on the left side of the upper flange 14, the extrusion motor 11 is detachably connected on the left side of the bearing seat 12, the extrusion motor 11 is connected with the bearing seat 12 through the matching between a key and a key slot, the main shaft 17 is rotatably connected inside the extrusion inner cylinder 22, and the main shaft 17 is matched with the bearing seat 12, the extruding machine is characterized in that an extruding screw 18 is arranged on the main shaft 17 and is fixedly connected with the main shaft 17, a discharge port 21 is fixedly connected to the right side of an extruding inner cylinder 22, a feed port 16 is fixedly connected to the left side, and the feed port 16 is opened upwards.

Heating mechanism 30 includes guide plate 31, inlet 32, liquid outlet 33, heating barrel 34 and heating coil 35, heating barrel 34 arranges in extrude the outside of interior barrel 22 and heating barrel 34 with extrude interior barrel 22 between fixed connection, heating barrel 34's right side top fixedly connected with inlet 32, heating barrel 34 left side below fixedly connected with liquid outlet 33, and heating barrel 34's inside is equipped with guide plate 31, for to getting into the inside liquid of heating barrel 34 guides, guide plate 31 with extrude interior barrel 22 between the outer wall fixed connection, in order to can also can be right in the environment of being colder extrude the material in the interior barrel 22 heat, the inside fixedly connected with heating coil 35 of heating barrel 34, shutdown mechanism 40 is including cutting off blade 41 and driving motor 42, the cutting blades 41 are fixedly connected with an output shaft of the driving motor 42, and the number of the cutting blades 41 is 3-5 and is uniformly arranged around the circumference of the output shaft of the driving motor 42.

As a further aspect of this embodiment: the upper flange 14 and the lower flange 15 are detachably connected through a connecting assembly 13.

As a further aspect of this embodiment: in order to extrude the material entering the extrusion inner cylinder 22, the extrusion screw 18 is a variable pitch screw, and the pitch of the extrusion screw 18 is gradually reduced from left to right.

As a further aspect of this embodiment: in order to realize the extrusion of the materials entering the inner extrusion cylinder 22, the inner extrusion cylinder 22 is a variable-diameter cylinder, and the space between the inner parts of the right side of the inner extrusion cylinder 22 is gradually reduced.

As a further aspect of this embodiment: the sealing surface of the upper flange 14 is provided with a groove, a sealing gasket 50 is arranged in the groove, and the sealing surface of the lower flange 15 is provided with a lug matched with the groove.

Example 2

This example is a further definition and improvement of example 1 based on example 1. an extrusion cutting apparatus for producing a modified plastic, comprising all the technical features of example 1, and further,

as a further aspect of this embodiment: in order to prevent the extrusion screw 18 from interfering with the extrusion inner cylinder 22 during rotation, the right end of the main shaft 17 is rotatably connected with a coaxial positioning block 20, and the coaxial positioning block 20 is connected and fixed with the extrusion inner cylinder 22 through a fixing rod 19.

As a further aspect of this embodiment: the number of the fixing bars 19 is 4.

As a further aspect of this embodiment: the bearing seat 12, the main shaft 17, the discharge port 21, the extrusion inner cylinder 22, the coaxial positioning block 20 and the heating cylinder 34 are coaxially arranged.

The working principle of the invention is as follows:

when the invention works, the material enters from the feed inlet 16, when the material advances along with the rotation of the extrusion screw 18 through the variable pitch of the extrusion screw 18 and the variable diameter of the extrusion inner cylinder 22, the material is firstly extruded due to the space reduction caused by the variable pitch of the extrusion screw 18, the material is further extruded along with the diameter reduction of the extrusion inner cylinder 22 along with the right side of the extrusion inner cylinder 22, and finally extruded from the discharge hole 21, the cutting blade 41 is driven by the driving motor 42 to intermittently cut the material flow extruded from the discharge hole 21, so that the extrusion and cutting of the modified plastic are completed, meanwhile, the heating mechanism 30 positioned outside the extrusion inner cylinder 22 can prevent the material from being cooled and solidified in the moving process, and the heating coil 35 arranged in the heating cylinder 34 can keep the heating mechanism 30 in a cold season or region The temperature capability provides guarantee.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The extrusion cutting device for producing the modified plastics comprises an extrusion mechanism (10), a coaxial positioning block (20) and a cutting mechanism (40), and is characterized in that the extrusion mechanism (10) comprises an extrusion motor (11), a bearing seat (12), an upper flange (14), a lower flange (15), a feed inlet (16), a main shaft (17), an extrusion screw (18), a discharge port (21) and an extrusion inner cylinder body (22), wherein the lower flange (15) is arranged on the left side of the extrusion inner cylinder body (22), the lower flange (15) is fixedly connected with the extrusion inner cylinder body (22), the upper flange (14) is detachably connected to the left side of the lower flange (15), the bearing seat (12) is fixedly connected to the left side of the upper flange (14), the extrusion motor (11) is detachably connected to the left side of the bearing seat (12), and the main shaft (17) is rotatably connected to the interior of the extrusion inner cylinder body (22), an extrusion screw (18) is arranged on the main shaft (17), the extrusion screw (18) is fixedly connected with the main shaft (17), the right side of the extrusion inner cylinder (22) is fixedly connected with a discharge hole (21), the left side of the extrusion inner cylinder is fixedly connected with a feed inlet (16), and the feed inlet (16) is opened upwards;

heating mechanism (30) includes guide plate (31), inlet (32), liquid outlet (33), heating barrel (34) and heating coil (35), heating barrel (34) arrange in extrude the outside of interior barrel (22) just heating barrel (34) with extrude in fixed connection between barrel (22) the right side top fixedly connected with inlet (32) of heating barrel (34), heating barrel (34) left side below fixedly connected with liquid outlet (33), and the inside of heating barrel (34) is equipped with guide plate (31), fixed connection between the outer wall of barrel (22) in guide plate (31) is with extruding, the inside fixedly connected with heating coil (35) of heating barrel (34), shutdown mechanism (40) is including cutting off blade (41) and driving motor (42), cut off blade (41) with fixed connection between the output shaft on driving motor (42), the number of the cutting blades (41) is between 3 and 5 and the cutting blades are evenly arranged around the circumferential direction of the output shaft of the driving motor (42).

2. Extrusion cutting apparatus for the production of modified plastics according to claim 1, characterised in that the detachable connection between the upper flange (14) and the lower flange (15) is accomplished by means of a connection pack (13).

3. The extrusion cutting apparatus for producing modified plastics according to claim 1 or 2, wherein the extrusion screw (18) is a pitch-variable screw, and a pitch of the extrusion screw (18) is gradually decreased from left to right.

4. The extrusion cutting apparatus for producing modified plastics as claimed in claim 3, wherein the extrusion inner cylinder (22) is a variable diameter cylinder which is gradually reduced between the insides of the right sides of the extrusion inner cylinder (22).

5. The extrusion cutting device for producing the modified plastics is characterized in that the right end of the main shaft (17) is rotatably connected with a coaxial positioning block (20), and the coaxial positioning block (20) is connected and fixed with the extrusion inner cylinder (22) through a fixing rod (19).

6. The extrusion cutting apparatus for modified plastic production as recited in claim 5, wherein the number of the fixing bars (19) is not less than 4.

7. The extrusion cutting device for producing the modified plastics is characterized in that the bearing seat (12), the main shaft (17), the discharge port (21), the extrusion inner cylinder (22), the coaxial positioning block (20) and the heating cylinder (34) are coaxially arranged.

8. The extrusion cutting device for producing the modified plastics is characterized in that a groove is formed in the sealing surface of the upper flange (14), a sealing gasket (50) is arranged in the groove, and a lug matched with the groove is arranged on the sealing surface of the lower flange (15).